The largest globular cluster in the galaxy Omega Centauri lies 17,000 ly away in Centaurus. It is 150 ly in diameter and contains over 10 million old stars.

PlaneWave 12.5″ Astrograph with an ST11000 camera, Astrodon filters, and ASA gearless DDM-85 mount. F/8 LRGB (12/30sec L, 2/30sec each 2×2 RGB).